Centrifugal pump.



PATENTEDYPR. 28, 1908.

l2 SHEETS-SHEET 1.

R. SALZER. CBNTRIPUGAL PUMP. APPLICATION FILED MAY 1a, 1907.

No. 885,867. A PATENTED PR. 28, 1908. R. SALZBR.

CENTRIPUGAL PUMP.

APPLICATION FILED MAY 18,1907.

2 SHEETS-SHEET 2.

Q N uw um, www. SQN Q QN -UNITED STATES' PATENT ois-Fien.

RUDOLF sitzen, or FHILADELPHIA, PENNSYLVANIA, Ass'IGNoR To DoLinn ENGINEER- ING"coMrANY,A ooRPoRAfiIoNioF NEW JERSEY.r i1

or:N'rrziiixiefsriY PUMP.

v Specicaton of Letters Patenf't.

APatent-sii April 2e, 190s.

Applicata mea nay is, i907; summa. 374-,sss.' p

To all whom it 'ma-y concern:

Be it known that I RUDOLF SALZER, 'a subsiding at P adelphia,l in 'the count of Philadelphia and State of Pennsylvania, av'e invente a newand usefulOentrifugalPump,

.of which the following is a specication.

invention relates to centrifugal pumps' e r double suction and has for its'objecjt' the'provision of-mjeans whereby with a-given pump case, shaft, etc., Hdvierent and inter- -changeableimp'eller's `or pumn wheel's with ,corres ondingly different an interchangeable istributers Vmay -be einployed to suit-` different conditions.-

" The independent distributer is preferably cast and is so lsecui'edhoth with relation vto the ump case andthe-impeller that it forms,

, provide suitable meansforsecuring the .im-

'impeller hub, and as' well, around the shaft,

in ye ect, a wall of thev pumrp `caseand'part of the discharge passa e.

ices, as above referred' to', and obviates. the difficulties of construction heretofore found when casting a'distributer integral with lthe pump case, under which circumstances the coring, anchoring oicores, etc'.,

im erfections'and diiiculties.

ft is the further bject of my gave rise to invention to eller on the driving shaft kin desired position. o this end the impeller is held by a Woodruff key up'on the shaft, andheldagainst endwise motion by collars secured to the shaft,

and over these collars is fastened a bushing forming a vsratel-v .ightl connection with the .a suitable'stuiiing box intervening between 'the-pump caseand vthe bushing.

' tributer.whentaking the form of a' vane i'in Eig. '4 is: al horizontal sectional My invention'resides also in other features of construction hereinafter described and pointed out in the claims.'

'For' an illustration, offa form my invention -may take reference Ais to be had to the ac` A.companying.. drawings, in which:

view Off't e inde fidentfdistributer.v

vertical'sectional Niew, atright anglesto his' construction. ermits nterchangea ility for different serv- I the shaft-bf the d istributer when ta i. the

form of a diffuser. A Fig. 6 isahoriz'onta sec` .tional view showing vthe means for securing tlieirnpeller, the shaft beingsl'iown plan.

Referring to said drawin s, the-shaft 1 is shown' as su having su'itall) e oilwells 5 and 6, adapted to contain oilto suficient'depth to permit-the oil rings 7 to dri therein and to continuously and automatica ly oil the bearings.

-coupling member on any suitable driving means as, for example,' aA steam turbine or .electric motor.

' 9,'having the usual vanes 9', is secured upon ed collars 11 surroundthe shaft-.1 and abut' ortedby the earings'2 -and'y C011 'flingmember 8 is secured upon one end of t ej shaft 1, and is adapted to cooperate Withthe The impeller ier-pump wheel 10 lin the v'impeller hub,` and. drivenatv suitable s eed by'said shaft, 1.A

against the ,ends of the impeller hub'. -These' collars 11 arev secured by screws'12 threaded into the-shaft 1. Bushings 13 have a snug jiit'over theshaft 1 and terminate in internally,V screw-threaded enlargements 14 adaptedy toengageth'e screw threads'u'pon' the periph. eries ofthe' collars' 1 1. Elie inner ends ofthe enlargements 14 have a i' peller hub 9xas indicated at- 15.*- At their outer ends the bushings 13 ass through the stuflingb'oxesor glands 16 aving a watertight connection with Vthe pump case 17, The pump case has the discharge passage 18 of the usual volute ,form the discharge orifice 4being at 19.A This construction for securing the impeller uponV the shaft permits the mounting of the shaft in place and coupling the same to the driving means, and thereafter vmoving the impeller to exactlyY correct position with res ect to' the stationary 'parts of the pump.

VVoodru' keys. When the impeller has been properly alined the collars 11 are secured inmore, if there should be any'slight yplay be-l tween the impeller andthe collars,l the {bushings 13 being screwed snugl against the impeller, hold t over the collars* esame in.

. his movement of the imp eller y to exact alinemen't is madepossible by the It follows, therefore, that thelimurther- 1 exactly proper alinement. Thescrew-threads i upon ono collar 11 are Aright handed, while those on the other collar 11 areleft handed, the purpose being that with a. given direction of rotation of the impeller the bushings 13 will have 'a tendency to move in such direction as to tighten up against the impeller hub.

' j the suction llwheel in -tho jma'nner well un erstood in the vlis v'rhedis'tiribiiterfrmg is preferably ast in 4two I ieces or rin l24 and 24, each suitablyfinis ed at'25' to ave atight or close fit with lasuitably machined or finished surface with'-y m-thepumpcase. The ump case an'd the distributor rings-24 and '24 are also suitably 'machined or finished at 26, and at these surfaces the distributor rings 24 and 24 are supported or secured'by the ump case in operative relation to the lmpelller and to the volute discharge passage 18. In other words, the distributor ring, as a whole, may be divided vertically in a plane at right angles to the shaft 1..

The-impeller 9, as shown, has a running fit j v'at or approximate the inner diameter of the distributor in the region where that distributer is engaged or secured by the pump casing,

sis

apploximate the joint 2 6.

hen the distributor is employed as a ide vano ring, the .two rings 24 and 24 are ridgod by the guide vanos which are shown 'insection at 28, as viewed in Fig. 3. guide vanos 28 may be cast integral with one members, as 24', for example, and

then nis ed along the line 24, Fig. '1, the

ring'24 also being finished along the surface' 24. Then, when the parts are assembled, the vanos 28 simply bear against the surface 24* of the ring 24. `Obviously, however, the distributor 24, 24 may be ivided along a horizontal plane, into top and bottom halves, as the same would be viewed in Fig. 1. such case, the half ring 24 and half ring24 would be cast integral with each other, the vanos 28 forming part of the single casting. Or with each mode of division, thel vanos 28 may be separate pieces lsuitably machined or otherwise treated and placed .in position. Or, if the distributor is employed as a diffuser, it may have the simple ribs '29, as

viewed in Flg. .5, which may either be cast' a guide Vane ring or as a diffuser, the rings 24 and 24 extend outwardly beyond the maximum diameter of either the guide` vanos 28 or ribs 29, as shown at 2.5,'and thenstur-ns l tributors 24, 24', to meet different conditions at thebest efficiency. Furthermore, the independent or removable distributor reduces complication in casting and in manufacture of tho pump case, as compared with previous practice, in which the gulde vane ring or distributor has, in some instances, been cast in tegral with the pump case. Under such cir-- cumstances of integral casting, the coring is difficult and the numerous anchorages rc quired for the cores introduce imperfections in the Walls of the pump case and distributor, often introducing lea-ks or other Serious troubles.`

The ternrdistributer is herein used to'apply to either aA guide vane ring or a dil'usor.

What I claim is:

1. In a centrifugal pump or tho like. the combination with a casing having n discharge passage therein, of' an impellvr, and an' ilidel-)endent distributor, having guide vanes or ribs, secu-red in operative relation to said impeller by said casing, said distributor extending outwardly beyond said vanos or l ribs and forming a wall oi' said discharge passage. I 2. In a centrifugal pumpor the like, tlu` combination with a casing-having n dis-V charge passage therein, of an` impcllcr, andV an independent distributor, having guich` vanos or ribs, said distributor extending out wardly beyond said vanes or ribs, and lorming in effect n. wall of said discharge passage.

3. In a centrifugal pump or tho likcytho combination with a pump casing, ol' :in impeller, and an independent distributor snpported by said pump casing, sziid distri buter intervenlng between said casing and the intake of said impoller.

4.. Inavcentril'ugal pump or the like, the combination with the pumpcasing having ,a discharge passage therein, of 'an impfllcr, und an independent distributor, having guido vanos orribs', embracing saidimpeller, said distributor extending outwardly beyondv said vnes or ribs and forming a wall of said dis charge passage` lill) 4mum diameter of said impeller being greater than the minimum diameter of said distribu- 13 ter.

6. In acentrifugal pump or the like, the

combination with the pump casing, of an impeller, a shaft, and'means for securing said impeller upon said shaft in alinement with said v ump lcasing comprising akey permitting ongitudinal movement of said impeller,

'collars-secured upon said shaft against the hub of said yim eller, and members screw threaded upon t e peripheries of said collars and engaging said hub.-

o 7. In a centrifugal pump or the like, the combination with the pump casing, of an impeller-,a shaft, and means for vsecuring saidl impeller on said shaft and in'alinement with said ump casing comprising a key permitting ongltudinal movement of said impeller,

collars secured to said shaft, the impeller hub located between said collars, a bushing screw threaded uponv the'periphery of each collar and engaging the impeller hub, and a stuiling box forming a water-tight connection between said bushing and said pump casing.

8. In a centrifugal pump or the like, the combination with the pump casing, of a dis.-

charge passage therein, an impeller, and an independent distributer embracing said impeller and intervening between said impeller a'ndsaid dischar e passage.

9. In,a centri ugal pump or thellike, the combination with the pump'casing, of a discharge passage therein, an impeller, and an independent distributersuplported by said pump casing at approximate diameter of said distributer, said impeller having a running fit with said distributer in a -region approximate the minimum diameter of said distributer.

10. In a centrifugal pump or the like, the combination with the pump casing, of a discharge passagetherein, an impeller, and an independent distributer supported by 'said pump casing in a region a roximate the minimum diameter of said lstributer, said distributer extending to the intake of said impeller and engaging said casing in a region approximate the minimum diameter of said dlstributer and forming, in effect, a wall of said discharge passage.

'11. combination with a pumpcasing, of an impeller, and an independent .distributer supported by said casing, said impeller having a runnin fit withsaid distributer.

1 2. n .acentrifugal pump or the like, the

combination with a pump casing, of an im- -shaftand forming in effect a wall of said disland said casing at the impeller intake, said "1m eller having a running fit with said disy the minimumA a ,peller, and an'indepen'dent distributen. said In a centrifugal pump or the like, the

combination with the pump casing, of a disracing said impeller, said impellerhaving a running fit with saiddistributer.

13, In a centrifugal pump or the like, the combination with a pump casing having a discharge passage therein, of an impeller, and an independent distribu'ter supported byv said casing at a diameter approximate the diameter oi the intake of said im eller, said impeller having a running rit wit 1 said dis-pA tributer.

14. In la centrifugal pump or the like, the combination with a pump casing having a discharge passage therein, of an impeller, and -a distributer, said impeller having a running iit with said 'distributer approximate the impeller intake.`

15. In a centrifugal pump or thelike, the combination with a casing having aA discharge passage therein, of a shaft, an impeller driven. thereby, and an independent distributer, having guide vanes'or ribs, said distribute;- extending outwardly beyond said vanes or ribs and turned laterally parallel with said charge passage.

16. -In a oentrifugalpump or thel like, the

'combination with the punipcasing, of a'n impeller, an independent distributer, having guide vanes or ribs, said distributer extending outwardly beyond said guide vanes orribs and secured by said casingat a region4 beyond said vanes or ribs, and having a running it with said impeller1 atv its intake.

- 17. In a centrifugal pump or the like, the

i combination with the pump casing, of an ixnpeller, and `an independent distributer, said distributer intervening between said impeller 18. In a centrifugal pump or the like, the combination with the pump casing, of .an imy peller, and an independent distributer, hav-l mg guide vanes or ribs, said distributer 'supported by said casing at regions beyond said vanes or ribs and approximate the impeller 19. -In a centrifugal. pump or the like, the combination with the pump casing, of an impeller,` and an independent distributer, said distributer embracing said impeller and supported by said'pump casing at a region of less diameter than the outer diameter ofsaid im-y peller. v v

20. In a centrifugal pump or the like, the combination with the pump casing', of an imdistribu ter embracing said impeller and Supported by said pump casing at regions of diameters both greater and less than the outer diameter of said 'impeller and having a running fit with sai' impellen` 21. In a centrifugal pump or the like, the

Disclaimerv Letterisvv Patent N 885.867.

charge passage therein, an impeller, a distributer carrying guide varies or ribs and su porting said AYanes or ribs intermediate t e impeller and discharge assage, vsaid distributerextending outwar ly beyond said ribs or Vanes and forming .in eHect a Wall of said discharge passage and extending inwardly to the im eller intake'. Y y 22. a centrifugal pumpy or the like, the combination .with the pump casingrof a dou- Able suction im eller, and a distributer having a running* t With said impeller at both l intakes. f 1

April 2s, 190s. Steam Pump Company'. Makes disclaimer" 23. In a lcentrifugal pump or the like, the combination with. the pump casing, of a double' suctien impeller, andpa distributer disposed symmetrically on bothI sides of said lmpeller and embracingandhaving'a running it with said impeller; v

In testimony whereof I have hereunto aflixed my signature in the presence of thev two subscribing Witnesses. y Y RUDOLF SALZERL Witnesses:

' 'ANNA E.'STEINBOCK,

DANIEL WEBSTER, Jr.

X l DISCLIMER- 885,867.4Rudolf Salzer,.Philadelphia, Pa. CENTRIFUGAE PMP. 'Patent dated i Disclaimer filed July 5, 1913, 'Iby the assignee, International UOf so much of each of the claims'numbered 3, 8, 11, 14, and 17 of said Lettersn Patent *as vcover constructions in which vnot so arranged Athat different and interchangeable impellers or pump Wheels with correspondingly dilerent and interchangeable 4distributers maybe employed v with a given pump case so that impellers of different diameters may be employed to suit different conditions Without changing "the pump casing'or other parts of the Water passages, leaving said c1a'ifm`s`to cover only constructions in which impell'ers of different diameters With Vdfillierent.'distributers may be substituted without changing other parts of the pump. i I

'[,OFIGIAL GAzErTE, July 15, 1.913.]

the distributer and mpeller are' charge passage therein, an impeller, a distributer carrying guide varies or ribs and su porting said AYanes or ribs intermediate t e impeller and discharge assage, vsaid d1strib- 5 uterextending outwar ly beyond said ribs or Vanes and forming .in eHect a Wall of said discharge passage and extending inwardly to the im eller intake'. Y

22. a centrifugal pumpy or the like, the

. 10v combination .with the pump casing,`of a dou- Able suction im eller, and a distributer having a running* t With said impeller at both l intakes. f 1

April 2s, 190s.

Steam Pump Company'. Makes disclaimer" Disclaimerv Letterisvv Patent N 885.867.

23. In a lcentrifugal pump or the like, -the combination with the pump casing, of a double' suction impeller, andpa distributer disposed symmetrically on bothI sides of said lmpeller and embracingandhaving'a running it with said imp'eller.` v

In testimony whereof I have hereunto afiixed my signature in the presence of thev two subscribing Witnesses. y Y RUDOLF SALZERL Witnesses:

' 'ANNA E.'STEINBOCK,

DANIEL WEBSTER, Jr.

X l DISCLIMER- 885,867.4Rudolf Solgar-,.Philadelphia, Pa. CENTRIFUGAE PMP. 'Patent dated i Disclaimer filed July 5, 1913, 'Iby the assignee, International UOf so much of each of the claims'numbered 3, 8, 11, 14, and 17 of said Lettersn Patent *as cover constructions in which vnot so arranged Athat different and interchangeable impellers or pump Wheels with correspondingly dilerent and, interchangeable 4distrihuters maybe employed v with a given pump case so that impellers of different diameters may be employed to suit different conditions Without changmgrthe pump casing'or other parts of the Water passages, leaving said cla'iirstol cover only constructions in which impell'ers of different diameters With Vdfillierent'distributers may be substituted without changing other parts of the pump. i I

'[,OFIGIAL GAzErTE, July 15, 1.913.]

the distributer and impeller are' Disclaimer in Letters Patent No. 885.867.

885,867,.`-Rudolf SaZzer,.Philadelphia, Pa. CENTRIFUGAL PUMP. Patent dated April 28, 1908. Disclaimer filed July 5, 1913, by the assignee, International Steam Pump Company.

Makes disclaimer- Of so much of each of the claims numbered 3, 8, 1l, `14, and 17 of said Letters Patent as cover constructions in which the distributer and impeller aref not so arranged that different and interchangeable impellers or pump Wheels with correspondingly different and interchangeable distributers may be employed with a given pump case so that impellers of different diameters may be employed to suit different conditions without changing Ithe pump casing or other parts of the Water passages, leaving said claimsn to cover only constructions in which impell'ers of different diameters with different distributers may be substituted without changing other parts of the pump.

[OFEICIAL GAZETTE, July 15, 1913.] 

